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improve customize

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Daniil Goncharov 2020-09-07 12:55:59 +03:00 • committed by GitHub
parent 000551a655
commit 690486e7f2
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5 changed files with 107 additions and 49 deletions
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69
include/magic_enum.hpp
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@ -91,25 +91,6 @@
namespace magic_enum {
// Enum value must be in range [MAGIC_ENUM_RANGE_MIN, MAGIC_ENUM_RANGE_MAX]. By default MAGIC_ENUM_RANGE_MIN = -128, MAGIC_ENUM_RANGE_MAX = 128.
// If need another range for all enum types by default, redefine the macro MAGIC_ENUM_RANGE_MIN and MAGIC_ENUM_RANGE_MAX.
// If need another range for specific enum type, add specialization enum_range for necessary enum type.
template <typename E>
struct enum_range {
static_assert(std::is_enum_v<E>, "magic_enum::enum_range requires enum type.");
inline static constexpr int min = MAGIC_ENUM_RANGE_MIN;
inline static constexpr int max = MAGIC_ENUM_RANGE_MAX;
static_assert(max > min, "magic_enum::enum_range requires max > min.");
};
static_assert(MAGIC_ENUM_RANGE_MIN <= 0, "MAGIC_ENUM_RANGE_MIN must be less or equals than 0.");
static_assert(MAGIC_ENUM_RANGE_MIN > (std::numeric_limits<std::int16_t>::min)(), "MAGIC_ENUM_RANGE_MIN must be greater than INT16_MIN.");
static_assert(MAGIC_ENUM_RANGE_MAX > 0, "MAGIC_ENUM_RANGE_MAX must be greater than 0.");
static_assert(MAGIC_ENUM_RANGE_MAX < (std::numeric_limits<std::int16_t>::max)(), "MAGIC_ENUM_RANGE_MAX must be less than INT16_MAX.");
static_assert(MAGIC_ENUM_RANGE_MAX > MAGIC_ENUM_RANGE_MIN, "MAGIC_ENUM_RANGE_MAX must be greater than MAGIC_ENUM_RANGE_MIN.");
// If need another optional type, define the macro MAGIC_ENUM_USING_ALIAS_OPTIONAL.
#if defined(MAGIC_ENUM_USING_ALIAS_OPTIONAL)
MAGIC_ENUM_USING_ALIAS_OPTIONAL
@ -132,6 +113,37 @@ MAGIC_ENUM_USING_ALIAS_STRING
using string = std::string;
#endif
namespace customize {
// Enum value must be in range [MAGIC_ENUM_RANGE_MIN, MAGIC_ENUM_RANGE_MAX]. By default MAGIC_ENUM_RANGE_MIN = -128, MAGIC_ENUM_RANGE_MAX = 128.
// If need another range for all enum types by default, redefine the macro MAGIC_ENUM_RANGE_MIN and MAGIC_ENUM_RANGE_MAX.
// If need another range for specific enum type, add specialization enum_range for necessary enum type.
template <typename E>
struct enum_range {
static_assert(std::is_enum_v<E>, "magic_enum::customize::enum_range requires enum type.");
inline static constexpr int min = MAGIC_ENUM_RANGE_MIN;
inline static constexpr int max = MAGIC_ENUM_RANGE_MAX;
static_assert(max > min, "magic_enum::customize::enum_range requires max > min.");
};
static_assert(MAGIC_ENUM_RANGE_MIN <= 0, "MAGIC_ENUM_RANGE_MIN must be less or equals than 0.");
static_assert(MAGIC_ENUM_RANGE_MIN > (std::numeric_limits<std::int16_t>::min)(), "MAGIC_ENUM_RANGE_MIN must be greater than INT16_MIN.");
static_assert(MAGIC_ENUM_RANGE_MAX > 0, "MAGIC_ENUM_RANGE_MAX must be greater than 0.");
static_assert(MAGIC_ENUM_RANGE_MAX < (std::numeric_limits<std::int16_t>::max)(), "MAGIC_ENUM_RANGE_MAX must be less than INT16_MAX.");
static_assert(MAGIC_ENUM_RANGE_MAX > MAGIC_ENUM_RANGE_MIN, "MAGIC_ENUM_RANGE_MAX must be greater than MAGIC_ENUM_RANGE_MIN.");
// If need cunstom names for enum type, add specialization enum_name for necessary enum type.
template <typename E>
constexpr string_view enum_name(E) noexcept {
static_assert(std::is_enum_v<E>, "magic_enum::customize::enum_name requires enum type.");
return {};
}
} // namespace magic_enum::customize
namespace detail {
template <typename T>
@ -306,16 +318,23 @@ inline constexpr auto type_name_v = n<E>();
template <typename E, E V>
constexpr auto n() noexcept {
static_assert(is_enum_v<E>, "magic_enum::detail::n requires enum type.");
constexpr auto custom_name = customize::enum_name<E>(V);
if constexpr (custom_name.empty()) {
static_cast<void>(custom_name);
#if defined(MAGIC_ENUM_SUPPORTED) && MAGIC_ENUM_SUPPORTED
# if defined(__clang__) || defined(__GNUC__)
constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
constexpr auto name = pretty_name({__PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 2});
# elif defined(_MSC_VER)
constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
constexpr auto name = pretty_name({__FUNCSIG__, sizeof(__FUNCSIG__) - 17});
# endif
return static_string<name.size()>{name};
return static_string<name.size()>{name};
#else
return string_view{}; // Unsupported compiler.
return string_view{}; // Unsupported compiler.
#endif
} else {
return static_string<custom_name.size()>{custom_name};
}
}
template <typename E, E V>
@ -335,7 +354,7 @@ constexpr int reflected_min() noexcept {
if constexpr (IsFlags) {
return 0;
} else {
constexpr auto lhs = enum_range<E>::min;
constexpr auto lhs = customize::enum_range<E>::min;
static_assert(lhs > (std::numeric_limits<std::int16_t>::min)(), "magic_enum::enum_range requires min must be greater than INT16_MIN.");
constexpr auto rhs = (std::numeric_limits<U>::min)();
@ -354,7 +373,7 @@ constexpr int reflected_max() noexcept {
if constexpr (IsFlags) {
return std::numeric_limits<U>::digits - 1;
} else {
constexpr auto lhs = enum_range<E>::max;
constexpr auto lhs = customize::enum_range<E>::max;
static_assert(lhs < (std::numeric_limits<std::int16_t>::max)(), "magic_enum::enum_range requires max must be less than INT16_MAX.");
constexpr auto rhs = (std::numeric_limits<U>::max)();